IPv6

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i have been seeing this alot lately and i saw it in class but my teacher said that with subnetting that there is no reason for v6, but could someone explain this better than "we have subnetting we don't need IPv6"? i do know that just about anything and everything could have an ip addy with v6... but what else is there?

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IPv6 is needed. We are quickly running out of IP addresses. IPv6 provides a substantial amount of more IPs than IPv4. I don't know all the numbers off the top of my head, but you can search google It's written in hex blocks like 3ff:0:0:fkjfkdsj etc

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with ipv6 you have so many ip's that you can give every computer on your network it's own dedicated ip accessible from the internet. if you have a subnet and gateway setup, you can use internal ip addresses(ones that cannot be accessed from anywhere but on that network).

the routers that share your dsl or cable connection do this. they assign all the computers on your network an ip something like 192.168.x.x this way you can have 64K computers hooked up to this one network, all using a single internet connection, with no need for ipv6. and everyone else with a broadband internet connection can do the same, so you are reusing ip's privately. this is one sidestep to get around the problem of running out of ip's.

32bit addressing(4 octets) allows only 4billion ip's last year i read that there were going to be 3 billion used by 2005. and to this end, some newer universities overseas aren't allotted the same bumber of ipv4 ip's the american universities have. most universiteis have a class B ip block. for example usf ownes 131.247.x.x there are some universities in india that were only assigned 8 ip's total. this means they have to use ipv6 or use the 8 ip's as the internet accessible ip's and gateway a huge private subnet.

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Basically your dog could have 16K IP addresses and we wouldn't come close to exhausting them anytime soon. This is an upgrade that we need and, barring the discovery of several new alien species across the galaxy, will keep us occupied for a LONG time.